Side by side

Hamilton American Classic Boulton MechanicalvsSternglas Naos Pro Automatik

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

American Classic Boulton Mechanical
HamiltonAmerican Classic Boulton Mechanical
MSRP $1,075
Naos Pro Automatik
SternglasNaos Pro Automatik
MSRP $755

At a glance

11 of 29 specs differ
Diameter
American Classic Boulton Mechanical34mm
Naos Pro Automatik38mm
Power Reserve
American Classic Boulton Mechanical80h
Naos Pro Automatik42h
Water Resistance
American Classic Boulton Mechanical50m
Naos Pro Automatik50m
MSRP
American Classic Boulton Mechanical$1,075
Naos Pro Automatik$755

Full specifications

Case

4 specs
Diameter
34mm
38mm
Thickness
11.2mm
9mm
Lug-to-Lug
46mm
42.4mm
Lug Width
22mm
20mm

Crystal & Dial

2 specs
Dial Color
White
Lume
None
Luminova Punkte

Movement

4 specs
Caliber
H-50
Miyota 9015
Type
Manual
Automatic
Power Reserve
80h
42h
Jewels
25

Pricing

1 specs
MSRP
$1,075
$755

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Hamilton American Classic Boulton Mechanical

Owners widely praise the Hamilton American Classic Boulton Mechanical for its smooth winding action and hacking seconds, with the absence of a date complication being a frequently noted positive. The watch is also lauded for its cool aesthetic and interesting company heritage. Overall, owners rate the Hamilton American Classic Boulton Mechanical highly for its user-friendly mechanical movement and distinctive style.

Sternglas Naos Pro Automatik

The Sternglas Naos Pro Automatik is praised for its slim 9mm case and Bauhaus dial design, featuring clear hour markers and a framed date window. Owners note the upgraded Miyota 9015 movement with a 4Hz beat rate. Accuracy is reported as -10/+30 seconds per day, which is not ideal for precision enthusiasts. The five-link bracelet's lack of fitted end-links and the optional bracelet's chunkiness are flagged as areas lacking refinement. Overall, reviewers highlight the Sternglas Naos Pro Automatik's improved wearability and premium feel at its price point.

From video reviewers

The Bauhaus design is a strength. The value proposition is a weakness.

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